Fixed rendering of flags located below data series

Previously if the label was below its data point, the connecting line was drawn over the label's text.
Now the connecting line will start from the top of the label in this case.
Ryan/TomW: apply fix for rendering of line of flags located below data series in FlagsSeries.js also
Fixed issue with wrong min and max in selection events on categorized axis. Closes #1207.
Merge remote-tracking branch 'origin/master'
Merge pull request #1524 from youdevise/master

Fixes to the rendering of Flags below their data series
catch error when file not exists with CL usage
Merge branch 'master' of https://github.com/highslide-software/highcharts.com
Implemented scheduled task for validating and cleaning the serverpool
Fixed issue with pie wrong chart data label connectors disappearing when hiding slice. Closes #1810.
Merge remote-tracking branch 'origin/master'
Fixed pointer to error message for wrong axis binding. Closes #1800.
Fixed issue with mispositioned pies in inverted charts after resizing. Closes #1795.
Removed php-phantomjs, this will not be supported any longer
Merge branch 'master' of https://github.com/highslide-software/highcharts.com
Add annotations module
Bugfixes for annotations module
Samples for annotations module
Fixed issue in MooTools and Prototype adapters when used with highcharts-more.js. Closes #1834.
Merge remote-tracking branch 'origin/master'
Fixed issue with error on custom exporting buttons containing no symbol. Closes #1822.